package demo4_11;

class Money implements Cloneable {
    public double money = 12.5;

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}

class Student implements Cloneable {
    //克隆接口，clone空接口
    public int age;
    public Money m = new Money();

    public Student(int age) {
        this.age = age;
    }

    @Override
    protected Object clone() throws CloneNotSupportedException {
        Student tmp = (Student) super.clone();
        tmp.m = (Money) this.m.clone();
        return tmp;
    }

    @Override
    public String toString() {
        return "Student{" +
                "age=" + age +
                '}';
    }
}

public class Test {
    public static void main(String[] args) throws CloneNotSupportedException {
        Student student1 = new Student(10);
        Student student2 = (Student) student1.clone();
        System.out.println(student2);
        //浅拷贝
        System.out.println(student1.m.money);
        System.out.println(student2.m.money);
        System.out.println("=======");
        //深拷贝
        student2.m.money = 20;
        System.out.println(student1.m.money);
        System.out.println(student2.m.money);
    }
}
